Etsa seretse se secha se nang le ho boloka metsi hantle:

Cement hydration process ke mokhoa o batlang o lieha, joalo ka samente e ke keng ea kopana le metsi ka nako e telele, samente e ke ke ea khona ho tsoela pele ka hydration, kahoo e ama ntlafatso ea matla hamorao. Seretse se fetotsoeng sa polymer se na le matla a phahameng ho feta boleng bo tloaelehileng, lebaka ke horephofshoana ea polima e ka qhaloang hapee ntlafatsa matla a ho boloka metsi, e le hore matla a morao a samente a eketsehe. Taba ea bobeli, ho thehoa ha karolo e nyane ea polymer ka seretse, ho ntlafatsa matla a tlamahano.

Ntlafatsa ts'ebetso ea kaho ea seretse se secha:

Ka mor'a ho eketsa phofshoana ea polymer ea redispersible ka har'a seretse se omeletseng se kopantsoeng, ho sebetsa ha seretse ho ntlafatsoa haholo, e leng haholo-holo ka lebaka la mabaka a latelang: A. Ha u kopanya redispersible polymer phofo le seretse, hobane likaroloana tsa phofshoana tsa polymer tse redispersible li koahetsoe ke colloid e sireletsang metsi. , lera la ho roala le ka thibela coalescation e ke keng ea qojoa pakeng tsa likaroloana tsa polymer e le hore ho be le phello ea lubrication pakeng tsa likaroloana, likaroloana tsa polymer li ka qhalakanngoa ka ho lekana ka boima ba slurry ea samente, Likaroloana tsena tse qhalakaneng, joaloka li-ball bears, li ka etsa hore likarolo tsa seretse li phalle ka thoko le ho ntlafatsa ho sebetsa ha seretse. B. redispersible polymer phofo ka boeona e na le phello e itseng ea ho hlahisa moea, redispersible polymer phofo ka phello ea induction ea moea e lokela ho fana ka khatello ea seretse, e le hore seretse se na le mosebetsi o motle oa ho haha. Ntle le moo, boteng ba li-bubble tse nyane bo boetse bo phetha karolo ea bohlokoa molemong oa ho ntlafatsa ts'ebetso ea motsoako.

Phofo ea polymer e ka qhaloang hapeho ntlafatsa ho feto-fetoha ha maemo le ho hanyetsa crack ea seretse:

Kamoraphofshoana ea polima e ka qhaloang hapee eketsoa ho seretse, tekanyo ea khatello ea seretse le tekanyo ea ho tsitsisa e ntlafatsoa haholo, e leng se bontšang hore brittleness ea seretse e fokotsehile haholo, ho tiea ho ntlafatsoa haholo, e le hore ho hanyetsa ho phatloha ha seretse ho ntlafatsoe.phofshoana ea polima e ka qhaloang hapeka seretse dehydrating filimi, eseng feela ho tlatsa mefokolo le pores ka lejoe la samente, empa le ho lihlahisoa tsa cementhydration le aggregate gluing ho theha polymer interpenetrating netweke, hobane modulus rekere ea polymer filimi ke ka tlaase ho moo seretse, kahoo brittleness ea seretse. e fokotsehile. Ho feto-fetoha ha seretse ho eketsa moeli o moholo oa deformation oa seretse ha o senyehile, 'me matla a hlokoang ke sekoli le micro-crack propagation a kenngoa ka tekanyo e kholo, e le hore seretse se ka mamella khatello e kholo pele se hlōleha. Ho phaella moo, filimi ea polymer e na le mochine oa ho itšehla thajana, 'me filimi ea polymer e etsa skeleton e thata ka har'a seretse sa samente se nang le hydrated, se nang le phello e sisinyehang ea manonyeletso, ho netefatsa hore ho na le elasticity le ho tiea ha skeleton e thata. Ho na le li-pores holim'a filimi ea polymer e entsoeng holim'a likaroloana tsa seretse, 'me li-pores li tlatsitsoe ke seretse, se fokotsang khatello ea maikutlo le ho hlahisa phomolo ntle le tšenyo tlas'a ketso ea matla a ka ntle. Ho ba teng ha maemo a phahameng a ho feto-fetoha ha maemo le sebaka se phahameng sa elasticity polymer ho boetse ho ntlafatsa ho feto-fetoha ha maemo le ho phutholoha ha seretse.